Retriving Previous 5 Rows And Next 5 Rows And The Searched Record

Dear All

I have a table with the following structure in sql server 2005

create table app(
sno int,
name varchar(50),
add varchar(50),
city varchar(50),
state varchar(50)
)

it contains the follwing data
------------------------------------------
sno name add city state
------------------------------------------
1 mark street no1 newcity newstate
2 mark street no1 newcity newstate
3 mark street no1 newcity newstate
4 mark street no1 newcity newstate
5 mark street no1 newcity newstate
6 mark street no1 newcity newstate
7 mark street no1 newcity newstate
8 mark street no1 newcity newstate
9 mark street no1 newcity newstate
10 mark street no1 newcity newstate
11 mark street no1 newcity newstate
12 mark street no1 newcity newstate
13 mark street no1 newcity newstate
14 mark street no1 newcity newstate
15 mark street no1 newcity newstate
16 mark street no1 newcity newstate
17 mark street no1 newcity newstate
18 mark street no1 newcity newstate
19 mark street no1 newcity newstate
20 mark street no1 newcity newstate

----------------------------------------

I want to retrive previous 5 records, next 5 records and the record that meet the where condition of a select query.


When I run

select sno,add,name,city,state from app where sno=7

I want the following result

------------------------------------------
sno name add city state
------------------------------------------
2 mark street no1 newcity newstate |
3 mark street no1 newcity newstate |
4 mark street no1 newcity newstate | -- previous 5 records
5 mark street no1 newcity newstate |
6 mark street no1 newcity newstate |
7 mark street no1 newcity newstate --- searched record
8 mark street no1 newcity newstate |
9 mark street no1 newcity newstate |
10 mark street no1 newcity newstate |--- next 5 records
11 mark street no1 newcity newstate |
12 mark street no1 newcity newstate |
----------------------------------------

if there is a method to get the above result set, kindly post the query.